Mold for concreting piles.



G. S. CHAPMAN.

MOLD FOR CONCRETING FILES.

APPLICATION FILED DEC.29, 1913.

Patented May 4, 1915.

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A TTOR/VE Y5 m M m W WITNESSES THE NORRIS PETERS 60., PHOTO-LITHo., WASHINGTON. D. c.

: ually draw-the edge portions together to the bottom of the shell. The shell is of suificiently greater diameter than the pile A to provide for whatever thickness of concrete B is required. WVith the shell in position and closed by the locking rod, concrete is poured into the shell; when partially set, the rod is pulled upward through the dock, or equivalent platform provided above the pile. In the event any concrete shouldfind its way into the locking rod at the joint of the shell, it may find exit through transverse outlets 11 formed in the back of the rod, said outlets being indicated in Fig. 4. To facilitate the lifting of the shell 10, when the concrete has set, I provide means adapted to receive a manipulating hook (not shown), the hook consisting simply of an "ordinary form of a handled elongated shank having ahooked lower end. The hook is adapted to be engaged in loops or equivalent formations 20 provided on the shell. For convenience the loops 20 are disposed at different points around the shell and at different elevations. These loops are shown as secured to metal strengthening bars or strips 20 which extend vertically on the shell and are suitably secured as by rivets 20 The hook is first engaged in one of the upper loops or hook-holds 20, and thenafter the shell has been partly raised, the hook is placed in one of the lower loops 20. In practice two hooks will engage the loops simultaneously.

The construction shown in Fig. 2 is similar to that in Fig. l'in all respects, except that instead ofdisposing the extreme edges at both sides'to overlie the exterior of the shell, one terminal 18 only is so laid on the exterior. The material at the opposite edge portion is returned to the interior of the shell and is formed into a flap 21, which overlaps the opposite edge of the shell and thus covers the joint between the opposed edge portions when the said edge portions are brought together.

In Fig. 3, the formation of the edge portions and cores is similar to that shown in Fig. 1, with the exception that in Fig. l, the cores 15 are plano-convexin cross section to present flat sides toward each other, whereas in Fig. 3, the cores 15 are shown 7 as round rods, and the portion 16 of the material of the shell is bent round to conform to the rods, the elements 16, 17, 18 and 19 being the same as inFig. 1. In all the constructions the form of the tubular locking rod is, the same.

By the improved construction a concrete covering can be applied to piles in any depth ,of water, say, even'to' thirty feet, without a diver manipulating the mold parts/ The convenience of driving and pulling the locking rod from a dock or the likeabove the piles not only facilitates the placing and removing of the mold, but results in great economy of time.

Having thus described my invention, I claim as new, and desire to secure by Letters Patent:

1. A mold to apply a concrete casing around piles already driven, comprising. a shell formed of tubular sheet metal split along'one side only, and of unbroken continuity in cross section between the edges, and a rigid locking rod in the form of a continuous tube to slidably engage theedge portions of the shell and secure the same, the said rod having a continuous longitudinal slot along a side thereof, and the said edge portions of the shell presenting outturne d, mating, lateral webs adapted by their combined thickness to approximately fill the longitudinal slot of the rod and lie back to back when drawn together by the rod, there being oppositely disposed longitudinal beads on the webs at their outer edges which are receivable in the interior of the rod, said rod being greater in length than the height of the shell and having means at its upper end whereby the rod may be driven and withdrawn.

2. A mold to apply a concrete covering around piles already driven, comprising a splitshell formed of bendable sheet metal,

and a rigid locking rod in the form of a continuous tube to slidably engage edge portions of the shell, said rod having a longitudinal. slot along a side thereof extending from the lower end and terminating short of the upper end, there being a driving and pulling head on the upper end of the rod, the said edge portions of the shell presenting outwardly disposed lateral webs, the web of each edge portion being returned on itself so that each edge presents a web of double thickness, the combined webs approximately filling the longitudinal slot of the rod, there being oppositely disposed enlarged beads on the webs respectively within the hollow interior of the rod.

8. A mold to apply a concrete covering around piles already driven, comprising a split shell of tubular sheet metal and of unbroken continuity in cross section from one edge to the other, and a locking rod for the opposite edge portions of the shell, said edge portions each having a core, the material of the shell extending outwardly and around said core and being returned on itself inwardly from said core, presenting beads at the, cored portions and'presenting lateral webs uniting the said'cored portions to the said body of the'shell, the locking rod being in the form of a longitudinal, continuous tube, the length of the rod exceeding the height of the shell, and the upper end of the rod having ahead whereby the rod may be driven and withdrawn, the rod furthermore having a longitudinal slot below the head to accommodate the webs of the respective edge portions of the shell.

4:. A mold to apply a concrete covering around piles already driven, comprising a split shell each edge portion of which presents a member outturned and then returned on itself, each edge thereby presenting a web of double thickness, the said webs having beads at the outer portions thereof and the two thicknesses of each Web lying close together between the beads and the body of the shell; in combination with a tubular, longitudinally slotted locking rod to engage the said edge portions of the shell.

5. A mold to apply a concrete covering around piles already driven, comprising a shell, opposite edge portions of which are formed with beads, one of the edge portions being formed with an interior flap overlapping the opposite edge portion when the shell is in the closed position; in combination with locking means to engage the said edge portions.

6 A mold to apply a concrete covering around piles already driven, comprising a bendable sheet metal shell split longitudinally, the edges of the shell each presenting a member out-turned and then returned on itself, each edge thus presenting a lateral web of double thickness, the said webs having adjacent flat sides, and the side of each web opposite the flat side presenting a transversely rounding bead.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GENERAL SHERMAN CHAPMAN. Witnesses:

' A. J. EAsTERs,

EDWARD C. ALLEN.

I Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G'. 

